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96 lines
2.3 KiB
Go
96 lines
2.3 KiB
Go
// +build !windows
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package main
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import (
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"bufio"
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"fmt"
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"io"
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"os/exec"
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"strings"
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"github.com/docker/docker/integration-cli/checker"
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"github.com/go-check/check"
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)
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type logMessage struct {
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err error
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data []byte
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}
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func (s *DockerSwarmSuite) TestServiceLogs(c *check.C) {
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testRequires(c, ExperimentalDaemon)
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d := s.AddDaemon(c, true, true)
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// we have multiple services here for detecting the goroutine issue #28915
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services := map[string]string{
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"TestServiceLogs1": "hello1",
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"TestServiceLogs2": "hello2",
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}
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for name, message := range services {
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out, err := d.Cmd("service", "create", "--name", name, "busybox",
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"sh", "-c", fmt.Sprintf("echo %s; tail -f /dev/null", message))
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Not(checker.Equals), "")
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}
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// make sure task has been deployed.
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waitAndAssert(c, defaultReconciliationTimeout,
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d.CheckActiveContainerCount, checker.Equals, len(services))
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for name, message := range services {
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out, err := d.Cmd("service", "logs", name)
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c.Assert(err, checker.IsNil)
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c.Logf("log for %q: %q", name, out)
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c.Assert(out, checker.Contains, message)
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}
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}
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func (s *DockerSwarmSuite) TestServiceLogsFollow(c *check.C) {
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testRequires(c, ExperimentalDaemon)
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d := s.AddDaemon(c, true, true)
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name := "TestServiceLogsFollow"
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out, err := d.Cmd("service", "create", "--name", name, "busybox", "sh", "-c", "while true; do echo log test; sleep 0.1; done")
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Not(checker.Equals), "")
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// make sure task has been deployed.
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waitAndAssert(c, defaultReconciliationTimeout, d.CheckActiveContainerCount, checker.Equals, 1)
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args := []string{"service", "logs", "-f", name}
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cmd := exec.Command(dockerBinary, d.PrependHostArg(args)...)
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r, w := io.Pipe()
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cmd.Stdout = w
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cmd.Stderr = w
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c.Assert(cmd.Start(), checker.IsNil)
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// Make sure pipe is written to
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ch := make(chan *logMessage)
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done := make(chan struct{})
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go func() {
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reader := bufio.NewReader(r)
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for {
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msg := &logMessage{}
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msg.data, _, msg.err = reader.ReadLine()
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select {
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case ch <- msg:
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case <-done:
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return
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}
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}
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}()
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for i := 0; i < 3; i++ {
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msg := <-ch
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c.Assert(msg.err, checker.IsNil)
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c.Assert(string(msg.data), checker.Contains, "log test")
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}
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close(done)
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c.Assert(cmd.Process.Kill(), checker.IsNil)
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}
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